56306646 has 24 divisors (see below), whose sum is σ = 133088904. Its totient is φ = 17062560.

The previous prime is 56306641. The next prime is 56306647. The reversal of 56306646 is 64660365.

56306646 is a `hidden beast` number, since 5 + 6 + 3 + 0 + 6 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 56306646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56306641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141991 + ... + 142386.

It is an arithmetic number, because the mean of its divisors is an integer number (5545371).

Almost surely, 2^56306646 is an apocalyptic number.

56306646 is an abundant number, since it is smaller than the sum of its proper divisors (76782258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56306646 is a wasteful number, since it uses less digits than its factorization.

56306646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284396 (or 284393 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 56306646 is about 7503.7754497320. The cubic root of 56306646 is about 383.2832904218.

The spelling of 56306646 in words is "fifty-six million, three hundred six thousand, six hundred forty-six".